MasterSeal 581 is a Portland cement-based coating for concrete and masonry that is resistant to both positive and negative hydrostatic pressure
MasterSeal 581 is a low-maintenance, long-lasting waterproof barrier that has been polymer-modified with MasterEmaco A 660. Transport and store in unopened containers in a clean, dry location free of rain, dew, and humidity. Bags should not be stacked higher than two pallets high. If dry onsite bag storage is not possible, or if the project is in a very wet, humid climate zone, specify MasterSeal 581 packaged in 50 lb (22.7 kg) metal pails. Keep MasterEmaco A 660 in a similar environment. Do not let the MasterEmaco A 660 freeze.
- Wind-driven rain, hrs 8 = excellent, Fed. Spec. TT-P-0035
- Impact strength, Fed. Spec. TT-P-0035
- Abrasion resistance, 3,000 L sand
- Passed, Fed. Spec. TT-P-141B
- Fungus resistance, at 21 days
- No growth; meets all requirements, Fed. Spec. TT-P-29B
